StepFun Models API Cost Calculator & Comparison

Every StepFun model, side by side — current API rates, context window, benchmarks, and a live calculator that ranks them at your exact workload. 1 active model, 1 with public pricing. Prices refreshed daily.

Models tracked

1

Active

1

With public pricing

1

Cheapest input

$0.10/1M

Calculate your StepFun API cost at your workload.

Set your workload — every priced model ranks in real time.

Adjust the workload

Every model below updates in real time.

1,00010,00050,000250,0001M10M

Ranked by your monthly bill

No models with public pricing available to compare right now.

Pricing at a glance

Blended $/1M tokens across the lineup.

Blended price uses a 3-to-1 input/output ratio. Green bar = cheapest.

Quality vs price

StepFun benchmarks at a glance.

Each point is one model — X is blended $/1M tokens, Y is the average of available quality benchmarks. Larger bubbles mean larger context windows.

Per-model benchmark scores

ModelAvgScores
Step 3.5 Flash62.2
LiveCodeBench86.4AA Intelligence Index38

Open weights

Open Models from StepFun

StepFun ships 1 open-source or open-weights model you can self-host or fine-tune. Each links to its Hugging Face card.

Every model

Every StepFun model — pricing, context & capabilities.

ModelContextInput /1MOutput /1M
Step 3.5 Flash262K$0.1$0.3

FAQ

अक्सर पूछे जाने वाले प्रश्न

Pricing patterns, best-known use cases, and how this provider stacks up.

Get instant answers from our AI agent

StepFun API pricing ranges starting at $0.10 per 1M input tokens. Output tokens cost more than input on every model. Prices are per 1 million tokens (1M ≈ 750,000 words). Use the calculator above to estimate your monthly spend at your actual workload.
Step 3.5 Flash is the lowest-priced StepFun model with public pricing at $0.10/1M input tokens. It suits high-volume tasks where cost matters most — classification, extraction, summarization, and similar workloads that don't need frontier reasoning.
Step 3.5 Flash is StepFun's highest-tier model at $0.10/1M input. It delivers the most sophisticated reasoning, instruction-following, and nuance. For workloads that don't require frontier performance, a mid-tier model typically cuts inference costs substantially.
Step 3.5 Flash support deep reasoning mode, which improves performance on multi-step coding, debugging, and code review. For simpler autocomplete or snippet generation, a faster, cheaper model often delivers acceptable quality at a fraction of the cost.
Step 3.5 Flash support function calling (tool use), required for agentic workflows. Agents need a model that reliably follows structured output schemas — test with your specific tool definitions before committing to production volumes.
Yes — StepFun supports prompt caching (discounts for repeated context) and batch processing (accept a delay, cut costs ~50%). These rates appear in the table above under "Cached /1M" and "Batch /1M." Caching pays off quickly if your prompts share a long system prompt or document prefix across many calls.
StepFun has historically adjusted prices when launching new model generations, often cutting rates to stay competitive. Buzzi.ai snapshots pricing daily — you can subscribe to price-drop alerts on any StepFun model using the "Alert me" button on its detail page.
Use the main comparison wizard to run the same calculator across StepFun, Anthropic, Google, Meta, Mistral, and 20+ other providers. Set your exact workload and get a ranked cost chart in under a minute.
Step 3.5 Flash offer an extended thinking or reasoning mode. The model spends extra compute "thinking" before answering — slower and more expensive, but meaningfully better on complex, multi-step problems. Standard mode is faster and cheaper for routine tasks.

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